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Stars Constellation Astronomy

Enjoy the Beauty of the Sky with Awesome Apps for Astronomy

For stargazers, sun seekers and those who marvel at the moon, an astronomy app can give you a magnificent window into the wonders of the universe.

It’s All in the Stars

Satisfy your cosmic curiosity. With details on constellations, comets, planets, and more, these exploration apps are shining stars.

Sky Guide

The augmented reality app for viewing the night sky

Sky Guide

Superimpose the stars on your sky

For anyone who enjoys learning about the night sky.

With Sky Guide: View Stars Night or Day, identifying those bright stars in the sky is simple. The app provides details on stars, planets, constellations, and other celestial bodies. Check the Home screen widget for sunrise and sunset times, use the red night mode for easier viewing in the dark, and never miss another out-of-this-world event with handy notifications. If you want an even more guided experience, tap the Compass icon at the bottom of the app. If you next tap the Camera icon, you'll go into a view fueled by ARKit. You'll be able to see the stars superimposed over your real night (or day) sky. Pan your camera around, and Sky Guide AR shows you which celestial bodies are where you're pointing, along with constellations. You can then tap on one to get more information about it. If the stars displayed on the screen are too bright and you want to see the real thing, just swipe down with two fingers to adjust the brightness of the display. You can swipe back up with two fingers to make things brighter again.

Why we love it

One of my favorite features of Sky Guide AR, other than the augmented reality functionality, is the educational content in the Supermassive update. You get several videos that help you learn more about the cosmos, with stunning visuals and wonderful, detailed information about the universe. The app also does a great job of setting the mood for stargazing, with gorgeous ambient music that has a real feeling of calm, serene space exploration.

Star Walk 2: The Night Sky Map

Learn about what you see in the sky with this handy tool for stargazers.

Star Walk 2: The Night Sky Map

Discover new depths

For those interested in cosmic entities and astronomy.

Star Walk 2 provides a magnificent view of the sky and interactive, 3-D control. Learn about all of those amazing and wondrous celestial bodies and enjoy it all with soothing music. With iMessage support, you and a friend can play a quick quiz game to test your knowledge. If you are a star gazing fan, this app is for you.

Why we love it

Star Walk 2 is a gorgeous and informational app for those interested in astronomy or who just appreciate the wonders of the universe.

StarMap 3D+ Plus

Get cosmic details and real-time positioning of the ISS.

StarMap 3D+ Plus

For those who like astronomy and learning about stars, constellations, and planets.

StarMap 3D+ not only provides information on stars, planets, and constellations, but includes real-time positioning of the International Space Station and the Hubble Space Telescope. The app is educational for those new to astronomy and helpful to those advanced on the topic. Lift your device to identify a sky object and the compass will align the map automatically.

Why we love it

StarMap 3D+: Night Sky, Astronomy, Star View Guide is the perfect star atlas for anyone interested in astronomy.

Night Sky

Raise your wrist or your phone and identify what’s in the sky.

Night Sky

Explore the sky

For those who like astronomy and enjoy details about celestial bodies.

Night Sky 4 is an easy-to-use and informative app for those who love to learn about astronomy. From stars and constellations to the International Space Station, the app provides the details you want in a sleek interface. With convenient notifications, you will never miss another celestial event and with Apple Watch support, just raise your wrist to the sky.

Why we love it

Night Sky 4 is a wonderful app for those who enjoy astronomy and stargazing or are simply curious about what they see in the night sky.

SkyView® Lite

Point and identify, set reminders for cosmic events, and enjoy learning about astronomy.

SkyView® Lite

Move to explore

For those who enjoy stargazing and identifying stars, constellations, and more.

SkyView is a bit different from other apps lbecause it uses the iPhone's camera as its viewfinder. In other words, you can hold your phone up and see stars, planets, and constellations through your camera. You can also see how the sky will look on a day in the future or past. In addition to that, SkyView gives you information about objects in the sky when clicked, which gives a variety of facts about the selected space object. Due to its unique feature set, this app is a nice, different choice for those who are looking for an app to tour the sky. It will not leave you disappointed, especially with its price tag of free.

Why we love it

SkyView Free - Explore the Universe is an informative and helpful app for all levels of astronomers. Identify what you see by pointing your device and capture gorgeous shots to share with friends.

A Sunny Outlook

If you need to know the solar position, golden hour, or when to expect the break of dawn, these sunny apps will point you in the right direction.

Sun Facts
Sun Facts

Sun Facts

Volker Voecking Software Engineering

Calculate times of sunrise, sunset, moonrise (pro), moonset (pro) and more for your location at any given date.

* Provides the following information:
- Sunrise
- Sunset
- Solar noon
- Twilight times
- Blue hour
- Golden hour
- Equation of time
- Declination
- Azimuth of sunrise and sunset
- Altitude of sun at noon
- Sun Path during the day
- Solstice and Equinox dates
- Widget for displaying sunrise and sunset times on the Today screen
- Date and time of next solar eclipse

Pro Version (In-app-purchase):
- Moon rise
- Moon transit
- Moon set
- Declination
- Azimuth of moon rise and moon set
- Altitude of moon during transit
- Date of next new/full moon
- Moon Path during the day
- Date and time of next lunar eclipse

* Location from :
- GPS receiver
- map
- list of more than 30000 cities
- WGS-84 coordinates

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SunMap - Sun/Moon Toolkit
SunMap - Sun/Moon Toolkit

SunMap - Sun/Moon Toolkit

Mapnitude Company Limited

Help you plan outdoor photography with this app.

Want to know Sunrise, Sunset, Moonrise and Moonset times? This app can helps you. It can show Sun/Moon-Rise/Set time. Exact location of Sun/Moon and upcoming twilight of anytime anywhere. All displayed in a beautiful time-chart style and on an interactive map that contains riches of information. Pick any time and date to see how different Sunrise/Sunset times change during different season.

This app is not limited to your current location, or predefined cities. Just like my other app, it's selling point is a unique tools to play around with map. Press ‘Map’ button on toolbar. Move to anywhere around the world. See detailed Sun/Moon information, any data will be updated automatically in real-time. After done playing around with map, switching back to chart view will carries on location information and update the screen accordingly

It's ok to freely to move map around. Timezone will be automatically adjusted if crossing city or country borders, so no worry about crossing timezone!

This app can show you these useful informations:
- See Sun/Moon data calculates in realtime, exact Sunrise, Sunset, Moonrise, Moonset time will be calculated base on its precise location on the map.
- Map will show where Sun/Moon will Rise/Set will land on that particular day. Path of Sun/Moon See Sun/Moon locations in that exact minute. Recommended feature for Landscape photographers! Plan your Sunset photo! Or avoid bright night that might ruins your Milky Way photography.
- View more detailed Sun/Moon data (Altitude/Azimuth).
- View Solstice and Equinox of any years
- View Moon phase information (Phase name/Days).
- View next new moon / full moon after specified date
- View standard twilight information - Official, Civil, Nautical, and Astronomical times (SunClock style)

Search your own location, or type in Latitude or Longitude value. and manually adjust Date, Time and Time Zone if needed.

For Apple Watch, View these data of your current location.

Note: All calculations in this app is done offline. Internet connection still required to view, update or search map. While offline, it is still possible to view current location's data while location service is enabled.

## Subscriptions ##
"SunMap - Sun/Moon Toolkit" is completely free to use with all features. You can subscribe to this application to remove ads.

Device subscriptions are available in these plan and will renew automatically each month, six months or year, unless cancelled.

(Per month) - $0.99
(Per six-months) - $4.99
(Per year) - $8.99

Pricing shown is for the United States store. Pricing in other stores will vary.

Payment for subscriptions will be charged to your iTunes Account at confirmation of purchase

Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.

Subscriptions may be managed by going to your iTunes Account Settings after purchase or by clicking the “Purchase / Manage Subscription. Auto-renewal may be turned off by going to Account Settings after purchase.

Subscription cannot be cancelled during the active subscription period

More information:
Privacy policy:
Terms of use:

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Explore The Solar System

Go on a space exploration with gorgeous visuals and great details.

Solar Walk - Planets Explorer

Go on a beautiful space exploration and learn about the solar system.

Solar Walk - Planets Explorer

For those who enjoy interactive apps for learning about the solar system.

With Solar Walk, you can explore the planets, moons, comets, missions, and satellites. For a complete, interactive, 3-D model, this app not only looks gorgeous, but provides great details on what you see in the sky. Learn about a planet’s size, mass, velocity, layers, and more with this easy-to-use and enjoyable tool.

Why we love it

If you enjoy learning about the solar system including planets, moons, comets, and more, Solar Walk is the app you want.

SkyORB 2021 Astronomy in AR

SkyORB 2021 Astronomy in AR

Stephane Denis

For those who want an augmented reality app for learning astronomy.

With SkyORB Lite, you receive a host of features to learn about the planets, constellations, comets, asteroids, and other objects in the galaxy. Using ARKit, the app offers real-time sky rendering with compass tracking. Additional features include a universal search, moon phases, a weather forecast, and notifications of cosmic events.

Why we love it

Learning about astronomy has never been easier or more fun than with SkyORB Lite.

Solar Walk 2 – Solar System 3D

Learn about the solar system with a gorgeous exploratory app.

Solar Walk 2 – Solar System 3D

Explore the solar system

For those who enjoy interactive apps for learning about the solar system.

Solar Walk 2, like its predecessor Solar Walk, provides a beautiful view of the objects in outer space. You can check out the calendar to see how the planets have already and will move in the future. The calendar also includes missions and explorations such as New Horizons. Enjoy the collection of simulations and fly through the solar system with this visually amazing tool.

Why we love it

Solar Walk 2 takes you on an awesome journey through space. Get information on the planets, missions, comets, and other celestial bodies.

Prepare for the Full Moon

For those interested in moon phases, illumination percentage, and lunar events, these stellar apps won’t leave you in the dark.

Moon & Garden
Moon & Garden

Moon & Garden


Moon & Garden makes the best of your organic garden by using biodynamic. Based on moon influence, this app will tell you what to do.

You are an organic addict, whether you are a very good gardener or amateur, Moon & Garden is for you. You will be able to see what is best to do following the day.

Lunar gardening calendar stands as a result from the collection of so-called millennium experiences related to biodynamic.

Plants are strongly naturally dependant on lunar phases (full moon, new moon...): therefore gardening activities such as sowing, repotting, transplanting, harvesting, ... would likely profit from lunar calendars, also considering on the crop nature (either the root, leaf, flower, or fruit of the plant)…

This app shows you the current phase of the Moon and also the current zodiac sign.

Have a look to weather forecast to garden in good condition.

With Moon & Garden, you can also take notes, check lunar phases and take pictures of your organic garden.

Schedule your gardening tasks using the reminder feature. The app will remind your daily tasks.

Share your pictures with Moon & Garden users using the "Community" feature.

Moon & Garden will help you manage your organic garden.

Moon & Garden is gonna be your best gardening friend.

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Moon Tracker
Moon Tracker

Moon Tracker

Zuzana Eskinasi

Moon Tracker a modern and an easy-to-use moon tracking app with the intuitive, sleek interface provides access to a comprehensive range of professional functionalities.

Augmented Reality projection of the position of the moon at your current location.

Extensive 2D and 3D visualization of the lunar path.

A comprehensive overview of moon positions, lunar phases, moonrise and moonset times.
All lunar eclipses, supermoon calendar, moon age and illumination.

No ads!

The free version of the app shows all information about lunar positions for your current time and location only.
The paid Premium version of the app grants you access to information for any location for any time of year.

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The Moon: Calendar Moon Phases
The Moon: Calendar Moon Phases

The Moon: Calendar Moon Phases

Vitalii Gryniuk

Moon Phases Calendar - universal lunar calendar for any Locations from 0001 to 2100 years.

Lunar calendar is one of the oldest calendars in modern society.
A lunar month can only be 29 or 30 days long. This is different than a solar based calendar, where the length is arbitrarily fixed.

- Moonrise
- Moonset
- Moon phases
- Lunar Days
- Illumination
- Distance
- Position

- Sunrise
- Sunset
- Altitude
- Azimuth
- Distance

- English
- Russian

How it use:
- View day info: tap on "Day number"
- Change year on Calendar: tap on year number

Unlock calendar subscription:
Your subscription will renew automatically each year and payment will be charged to your iTunes Account within 24-hours prior to the end of the current period. You can turn off auto-renewal by going to your Account Settings after purchase.

Terms of Use:

Privacy Policy:

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Find The Best Times To Stargaze

Once you find out what to look for in the sky, check out the best times and locations to stargaze.

Polar Scope Align Pro Watch

Polar Scope Align Pro Watch

Dimitrios Kechagias

Apart from the most reliable app for polar alignment (with or without a polar scope), PS Align pro has become the astronomer's swiss-army knife with all the tools added over the years. Remember, all features & updates are free forever, the only in-app purchases are donations (tip jar).

Polar Scope Align will calculate the position of Polaris or σ Octantis in your Polar Scope reticle for your location (using your phone's GPS or manually), allowing a quick and accurate polar alignment. It is one of the few programs that are accurate in lower latitudes by correcting for atmospheric refraction (so expect results to agree only with precise software and not most simplistic "polar align" apps - see the "Accuracy" section in help for details). In the settings you can select the polar scope reticle that matches your own, from a vast collection:
iOptron old & new, Astro-Physics RAPAS & PASILL, various versions of Takahashi EM-10/11/200/400/500, NJP, PM-1, P2-Z, the latest Orion / Skywatcher, the Classic Skywatcher / Orion / Celestron / Meade / EXOS2 / Bresser, the Telrad, Rigel QuikFinder, a couple for Astrotrac / Losmandy / Kenko / Avalon, the Vixen PF-L/Atlux/SX/SXD/SXP/AXD/GP/GP-DX/Polarie Polar Axis Scopes, a Konus and several Polar Finders: Tuthill, Explore Scientific 8x50, Meade 9x60, Vixen Polaris, Celestron 7x50, Carton Optical. PoleMaster help view for South Hemisphere users.

The Pro Watch version has all the features of Polar Scope Align Pro, with the addition of an Apple Watch app featuring:
-Graphic & Text display of polar alignment.
-Weather view.
-Bubble level.
-Day alignment & push/hop-to assist.
-Moon/Sun rise/set/twilight/phase.

Feature list:

-Accurate calculation of Polaris or Sigma Oct for any date and location, including effect of atmospheric refraction (and annual aberration, nutation). Most other apps do not perform precision calculations, so please only compare app readings to accurate sources (USNO etc).
-Use device time/date/location, or enter your own, or pick from online & offline world databases via the Location Manager.
-Approximate daytime / no polarscope polar alignment tool. Great for visual use, solar imaging (inc. eclipses) and even limited short focal length astrophotography. Now with sun shadow calibration for more accuracy!
-Laser / Hop Align for nighttime alignment using a calibration star for obstructed or not visible polar star, or for improving laser align.
-Full app in red-color (or alternative green, white) night mode - tools switchable to daytime view.
-Deep Space Object (DSO) Database with 22000+ objects from several catalogs (Messier, Caldwell, NGC, IC, Herschell 400, Sharpless 2, Barnard), along with stars (Yale Bright Star) & planets. Search, apply filters, sorting, download DSS color images for all items, or get help finding them with your non-goto telescope with the Push-To function.
-Connect to and control WiFi-enabled iOptron mounts.
-Over 30 calculators useful for observing and astrophotography, from eyepiece magnification and field of view, to imaging resolution and reducers.
-World astro-weather report based on data from 7Timer!, Dark Sky and more.
-Water vapor satellite images.
-List of visible ISS and bright satellite passes.
-Moon phase & lunar Calendar with solar/lunar rise/set and twilight times.
-Wizard to calculate your reticle centering offset and correct or compensate for it.
-Zoomable reticle view and customized routines & tools: Alt-az alignment error display for mounts that calculate it after star alignment (e.g. iOptron iEQ45, CEM60), polar alignment when your scope is not in zero position (for mounts like iOptron ZEQ/CEM on which you can always access the polar scope), remember zero position on Celestron / Skywatcher / Orion etc reticles.
-Bubble level (using either gyro or accelerometer) and Compass heading, as well as magnetic declination reading.
-GPS accuracy & elevation data.
-Red/White/LED light.
-Dimming slider.
-iOptron, NexStar and Meade LX200 Star Lists.